Finding the Fourth Proportional to 1,017.39, 1,525.71 and 401.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.39 : 1,525.71 = 401.24 : x
2. Step 2: Convert to fraction form
   1,017.39/1,525.71 = 401.24/x
3. Step 3: Cross multiply
   1,017.39x = 1,525.71 × 401.24
4. Step 4: Simplify right side
   1,017.39x = 612,168.25
5. Step 5: Solve for x
   x = 612,168.25/1,017.39
6. Step 6: Final answer
   x = 601.70